Vato: Thanks, Ill keep those in mine, once I add the new filter to my pond.
ilovewigwams : Actually there is no window, but the pond is a concrete circular shape 300 gal pond, with a circular island in the middle (Japanese Watergarden), the deepest part is around 17 inches, and the shallowest part being 11 inches. I keep the water clear with a fluval 404 filter conected to a 40watt Uv sterilizer and an 900 gal/hr pump. I also have 750gall/hr pump creating circulation in some parts of the pond. With this i have no problem watching my fish the swim very lively around the pond, and make a very good contrast with the garden and plants, and I love it.
I also keep a couple of sumbersible heaters to keep the water at 77 F. I am planning on adding a wet dry filter, but thats in two weeks